Search a number
-
+
3013611631 = 3781448963
BaseRepresentation
bin1011001110100000…
…0001000001101111
321210000122022222121
42303220001001233
522132441033011
61215012053411
7134452163512
oct26350010157
97700568877
103013611631
111307118028
12701304267
1339046bc64
1420834ad79
15129881e71
hexb3a0106f

3013611631 has 4 divisors (see below), whose sum is σ = 3095060632. Its totient is φ = 2932162632.

The previous prime is 3013611619. The next prime is 3013611683. The reversal of 3013611631 is 1361163103.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1361163103 = 4789284227.

It is a cyclic number.

It is not a de Polignac number, because 3013611631 - 25 = 3013611599 is a prime.

It is a super-2 number, since 2×30136116312 = 18163710124996960322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3013611596 and 3013611605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3013611611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40724445 + ... + 40724518.

It is an arithmetic number, because the mean of its divisors is an integer number (773765158).

Almost surely, 23013611631 is an apocalyptic number.

3013611631 is a deficient number, since it is larger than the sum of its proper divisors (81449001).

3013611631 is an equidigital number, since it uses as much as digits as its factorization.

3013611631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81449000.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 3013611631 is about 54896.3717471383. The cubic root of 3013611631 is about 1444.4275428658.

Adding to 3013611631 its reverse (1361163103), we get a palindrome (4374774734).

The spelling of 3013611631 in words is "three billion, thirteen million, six hundred eleven thousand, six hundred thirty-one".

Divisors: 1 37 81448963 3013611631